HVDC-VSC Model And Simulation For The Grid-Connection Wind Farm Application

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Abstract:
9 y7 E; u, I% E; ^+ N7 VThis paper describes reasonable design of the HVDC-VSC model for large grid-connection wind farm, and presents the short-term stability (three phase short circuit fault) simulation results.
In this paper, it presents an aggregated, single-machine model of the wind farm has been added at the wind farm-side of the HVDC-VSC transmission system, and also a reduced pitch control model of the wind turbine blade pitch system has been implemented. Therefore, the HVDC-VSC model has been designed, when the gird is subject to faults, the dynamic control for the grid-side and wind farm-side converter is applied to control the HVDC-VSC transmission system and allow the ride-through operation. A simplified model of the grid equivalent delivered by Energinet.dk has been presented for the simulation.
The comparison of the grid-connection wind farm behaviours in the power system with and without HVDC-VSC in operation has been carried out in the paper.